Springs Raynor doors are balanced by torsion (shown) or extension springs. Extension springs are mounted just above the horizontal track, perpendicular to the closed garage door. Torsion springs are mounted above the closed door, parallel and horizontal to the top section of the door as shown here. Torsion springs wind and unwind to provide lifting power, where extension springs get their lifting power by stretching. Door Sections Door Sections Sections are the primary visual part of your door. Raynor offers a variety of exterior door designs, including up to 13 styles for Raynor Innovations Series doors. Interior construction ranges from pan doors without insulation to insulated steel sandwich doors. Custom-Fit Track Custom-Fit Track Heavy gauge steel is used to ensure stability and long life. All Raynor track is made specifically for every door ordered and can be adjusted for a precise fit. Strong Hinges Hinges Hinges are made of high-quality steel and bear the weight of the door in the upright (closed) position. On Raynor Premium-level garage doors and all Raynor Innovations Series doors, hinges are powdercoated for maximum protection against moisture and rust.